What happens if my car fails an MoT before the date of expiry?

If my car fails the MoT prior to the expiry date of the current MoT certificate what is the status? When looking on the government check and MoT status it shows fail but also says the current MoT is coming...

Is it legal to have the engine running when not in the vehicle?

My Volvo can be started from the phone app - useful for defrosting/warming in the winter and cooling in the summer. (The car remains locked and can't be driven without the key and the driver sitting...

Does having an airbag light on invalidate my insurance?

Will an airbag fauly warning light on my dashboard invalidate my insurance if stopped by the police in England?

I can't find an all-season tyre with a high enough load rating, would this affect my insurance?

My handbook says my tyre's load rating should be 96 but I want to fit 4 season tyres and I cannot find a supplier who has anything above 94. Would it affect my insurance if I fitted 94?